print description directly from catalog game

Author: edwardchalstrey1

doc/tutorials/02_extensive_form.ipynb

@@ -1134,11 +1134,31 @@
    "metadata": {},
    "source": [
     "Some games in the catalog have configurable parameters.\n",
-    "For example, the `OneShotTrust` game has the `unique_NE_variant` parameter, which makes Trust a dominant strategy, replacing the\n",
-    "    non-singleton equilibrium component from the standard version of the game\n",
-    "    where the Buyer plays \"Not Trust\" and the seller can play any mixture with\n",
-    "    < 0.5 probability on Honor with a unique NE where the Buyer plays Trust and\n",
-    "    the Seller plays Abuse."
+    "For example, the `OneShotTrust` game has the `unique_NE_variant` parameter, which is explained in the game's description:"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 21,
+   "id": "2933061a-a2eb-4ca7-8ce3-f350bc0678ce",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "\n",
+      "    The unique_NE_variant makes Trust a dominant strategy, replacing the\n",
+      "    non-singleton equilibrium component from the standard version of the game\n",
+      "    where the Buyer plays \"Not Trust\" and the seller can play any mixture with\n",
+      "    < 0.5 probability on Honor with a unique NE where the Buyer plays Trust and\n",
+      "    the Seller plays Abuse.\n",
+      "    \n"
+     ]
+    }
+   ],
+   "source": [
+    "print(catalog.OneShotTrust.description)"
    ]
   },
   {